230857173925866 has 20 divisors (see below), whose sum is σ = 517291074908322. Its totient is φ = 76952391308568.

The previous prime is 230857173925853. The next prime is 230857173925867. The reversal of 230857173925866 is 668529371758032.

230857173925866 is a `hidden beast` number, since 2 + 3 + 0 + 8 + 5 + 7 + 1 + 7 + 39 + 2 + 586 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 224807891024025 + 6049282901841 = 14993595^2 + 2459529^2 .

It is a junction number, because it is equal to n+sod(n) for n = 230857173925794 and 230857173925803.

It is not an unprimeable number, because it can be changed into a prime (230857173925867) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 712522141585 + ... + 712522141908.

Almost surely, 2^{230857173925866} is an apocalyptic number.

230857173925866 is an abundant number, since it is smaller than the sum of its proper divisors (286433900982456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230857173925866 is a wasteful number, since it uses less digits than its factorization.

230857173925866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425044283507 (or 1425044283498 counting only the distinct ones).

The product of its (nonzero) digits is 914457600, while the sum is 72.

The spelling of 230857173925866 in words is "two hundred thirty trillion, eight hundred fifty-seven billion, one hundred seventy-three million, nine hundred twenty-five thousand, eight hundred sixty-six".